Description
A specially-crafted file can cause libjxl's decoder to read pixel data from uninitialized (but allocated) memory. This can be done by causing the decoder to reference an outside-image-bound area in a subsequent patches. An incorrect optimization causes the decoder to omit populating those areas.
References (1)
Scores
CVSS v4
2.3
EPSS
0.0001
EPSS Percentile
0.3%
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-908
Status
published
Products (1)
Google/libjxl
0.7 - 0.11.1
Published
Feb 11, 2026
Tracked Since
Feb 18, 2026